Automatic fire-sprinkler.



Q. Inventor:

A. I. SUHALL. AUTOMATIC FIRE SPRINKLER.

APPLICATION FILED SEPT. 14, 1911.

1,010,078. Patented Nov. 28, 1911 111 1 0, 67. Attest- E 1 TIMTED srarnsrarnnr -rrrcn.

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AUTOMATIC FIRE-SPRINKLER.

Specification of Letters iatent.

Application filed September 14, 1911. Serial No. 5452327.

and particularly to devices of this character intended to automaticallysprinkle or spray water or other substances, and its objects are, amongothers, to produce a device of this character of relatively simple anddurable construction, which will act with greater certainty and protecta greater zone or area from fire.

The invention consists in the construction, combination and arrangementof parts hereinafter described and claimed and illustrated in theaccompanying drawings.

In the said drawings Figure 1 is a bottom plan of a fire extinguishingsprinkler embodying the improvements, and Fig. 2 is a vertical sectionof the same on the line 22 of Fig. 1, looking in the direction indicatedby the arrows in that figure, and showin the device inverted.

The inlet tube A is adapted to be connected with a water-main or othersource of supply of -fire extinguishing fluid, and communicates with acentral chamber B, having a vent in its bottom consisting of aforaminous cone C, provided with a cap D, covering and closing the same.From this central chamber B extend four horizontal hollow arms F, eacharm provided with a hollow head G, provided with a vent H, consisting ofa foraminous cone C, and closed by a cap J, similar to the cap D. Thecaps D and J fit the exterior of t eir respective cones very closely,and are, in fact, ground,

so as to coincide therewith exactly. The inner edge of the cap, however,does not 'quite come in contact with the base of the cone, and anannular space K is, therefore, left between the said inner edge andbase. These caps are normally held in position by struts L and M, madeof fusible metal and provided with a conical tip at one end, fitting adepression'in the cap and a recess at the oppositeend to receive thepoint of the thumb-screw plug N, by which pressure is applied theretoand the cap thus pressed firml against the perforated cone. The thum-screws N intermesh with threaded apertures in the brackets O and P, thebracket 0 being threaded to the exterior of the chamber B, and thebrackets P to the" exterior of the heads G. lVhen the fusible struts Lrelease the caps they fall off of their Patented Nov. 28, 1911.

own weight, accelerated by the pressure" from within, and in order toprevent loss of these caps, they are connected to the 'sprinkler bymeans of chains R, secured at one end to a collar R on the cap, and theother end to a collar R; which in the case of the caps closing theorifices of the arms are strung on the arms F, and in the case of thecap closing the bottom orifice of the chamber B surrounds one branch ofthe bracket 0.

It will be noted that the construction herein described is one ofextreme strength and simplicity, and that the parts are interchangeable.The construction is also such that the sprinklers may be assembled ordismembered withoutthe use of tools or the making or breaking ofpermanent joints, and

it is with these ends in view that the hollow beveled seat for itsextreme inner edge; thatthe brackets O and P are threaded on theexterior of the central chamber B and the hollow heads G respectively;and that the caps D and conical sprinkler vents C are the same size.

It is a very simple matter for the engineer of a large building fittedwith this apparatus to make repairs after a fire, from a stock of partskept on hand, or to set up new sprinklers in different parts of thebuilding, and, in fact, this work can be done, and. done properly, bypersons not at all familiar with mechanical appliances. In addition tothese and other advantages, the sprinkler possesses the great advantageof covering an extensive area, and thus protecting itfrom fire. Thenumber of sprinkler heads connected with the central chamber'B may bevaried, and one or two or more may be plugged up, where the sprinkler islocated in a corner or some other place where sprinkling in one generaldirection only is desired. There are also other advantages which will beobvious to those familiar with this art, among which is the advantageafforded by the method of attaching the brackets to the frame of thesprinkler, which cap, and a small screw-bolt R which passes through thearm and engages the end link of the chain. WVith this arrangement thecap with its collar may be placed in position and the chain thenconnected with the collar.

What I claim is: 1. A device of the character described, comprlsing acentral chamber, means for connecting the said chamber with a source offluid supply, a plurality 'of hollow arms extending horizontally fromsaid chamber, said arms being formed in two detachable sections, ahollow head on the end of each arm, a conical perforated portion on saidhead, a complemental cap fitting said perforated conical portion, abracket surrounding 'said cap, a fusible strut, and an adjust ablemember secured to said bracket, by the movement of which the said strutmay be pressed against the said cap or withdrawn therefrom.

2. A device of the character described, comprising a central chamber,means for connecting the said chamber with a source Copies 01' thispatent may be obtained for therefrom,

of fluid supply, plurality of hollow armsmovement of which the saidstrut-may be pressed against the said cap or withdrawn and a perforatedconical vent in the bottomof said central chamber and a cap co ering thesame, both parts being substantially identical with the first claimedconical port-ions and caps.

3. In a device of the character described the combination of aperforated cone, a cap covering said cone and closing the perforations,a collar on said. cap, an arm projecting from said collar, means forspacing said arm from the cap, and'means for connecting the said arm toa chain or other flexible member, whereby the said cap is held connectedto the device after it has been displaced.

Witness my hand this 11th day of September, 1911, at the city of NewYork, in the county and State of New York.

v 'ALY I. SCI-IALL. Witnesses:

E. W. SCHERR, Jr., ALAN C. MODONNELL.

five cents each, by addressing the Commissioner of Patents, Washington,D. G. i

formed in two detachable

